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WS2 - Application of “Less Is More” Principle to Reduce Energy Use, Increase Productivity and Solve Problems in Manufacturing Cosmetic Emulsions
Where: Mico, Blue Room 1 - When: Sept, 30th 14.00/16.00
Emulsions are very useful in preparing many types of skincare, haircare and makeup products because many water-soluble and oil-soluble ingredients can be incorporated to form safe, functional and pleasing consumer products.
However, since all emulsion products are non-equilibrium systems, their physical properties and appearance can change significantly with time. In addition, the method of preparation and even the batch size in manufacturing can affect the product quality. Frequently, quality of the first production batch can be quite different from that of a sample made using an identical formula in the laboratory, and varying the size of production batches can also produce unwanted variance. This leads to a tendency for chemists to incorporate in new formulations more surfactants or stabilizers than might be needed, to avoid these unintended changes in quality or stability. For the same reason, there is also a tendency for manufacturing staff to use more energy in processing emulsion products than might be required.

The purpose of this presentation is to use case studies to demonstrate that adding more surfactants or stabilizers will not always yield better results. In fact, sometimes, emulsion stability can be improved by reducing the use of certain surfactants. Similarly, the quality of emulsified creams can sometimes be improved by reducing, rather than increasing, energy application. The key is to understand the principle of “Less Is More,” and to identify the optimum “Z Point”.

Use of the “Less Is More” principle can reduce production time and costs, as well as yield significant energy savings to help reduce our industry’s contributions to climate change.

Worth for: R&D and Technology Transfer technicians, and all those working in the production department.  


L. Rigano –
General Manager of Rigano Laboratories S.r.l.
He gained his University degree in Industrial Chemistry at University of Milan in 1970. After that, he worked in different multinational cosmetic industries as product development manager and technical director. Since 1986, he is General Manager of Rigano Laboratories Srl, studying cosmetic application of raw materials, R&D of cosmetics, microbiological issues, scaling-up, quality assurance and production issues. Other activities: consultancy on EU and international norms, Scientific Director of ISPE Laboratories, involved in clinical studies of efficacy, safety, sensory evaluations of cosmetics.

J. Lin – Independent Consultant
Since 1970 he is an independent consultant, specializes in emulsion technology and trouble-shooting of manufacturing problems. He was previously manager of the Emulsion Laboratory at Max Factor, Hollywood, and has published many papers on Low-Energy Emulsification. His book, “Manufacturing Cosmetic Emulsions: Pragmatic Troubleshooting and Energy Conservation” was published in 2010.  Dr. Lin has been recognized several times by the Society of Cosmetic Chemists, USA and was a recipient of the Maison G. DeNavarre Medal Award in 2001.  He has presented many papers at IFSCC Congresses, receiving awards in London (1974) and Sydney, Australia (1978).  

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